Application of a visual computer simulator into collaborative learning

A visual simulator has been developed for understanding computer structure and behavior. It is written in the Java programming language, downloaded from a Web server, and executed on major browsers. It has been designed to illustrate how a computer works visually and run not only as a Java stand-alone application but also as a Java applet. Our visual simulator reads program files written in an assembly language, executes them in step-by-step manner as well as in automatic (i.e., continuous) manner and demonstrates how those programs are processed graphically by computer. In order to improve functionality of simulator, some modules have been newly added, which are designed to perform, for example, online message service, guideline display and built-in e-mail handler. In this paper, new facilities of our simulator mainly explained. They can make its user interface improved and provide communication support between teacher and students for the sake of distance education